SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('1a66d38f78ac5d39a476ec49abecf52b','0','3.145.184.117','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715474611','board.php?boardid=136&sid=5f01f7baed3bf673a1aef6355a6de018','0','0','')
mysql error: Duplicate entry '1a66d38f78ac5d39a476ec49abecf52b' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 02:43
Script: /board.php?boardid=136&sid=5f01f7baed3bf673a1aef6355a6de018
Referer: http://wehrbauten.de/board.php?boardid=136&sid=5f01f7baed3bf673a1aef6355a6de018